Analysis of B-s -> KK decays in the PQCD

作者：Chen CH^*

来源：Physics Letters B, 2001, 520(1-2): 33-40.

DOI：10.1016/S0370-2693(01)01117-0

We study B-s --> K K decays in the framework of the PQCD. We show that the branching ratios of B-s --> (K+K-, K-0(K) over bar (0)) are about (22.43, 25.78) X 10(-6) for phi (3)(gamma)similar or equal to 72 degrees, which are consistent with the model-independent estimations. We find that the typical scale of the decays is near 1.7 GeV. We also point out that the induced strong phase delta is around 207 degrees so that the direct CP asymmetry of B-s --> K+K- could reach 15%.

• 出版日期2001-11-8